Debt (Details) - Schedule of Total Fixed-Rate and Variable-Rate Debt - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Schedule of Total Fixed-Rate and Variable-Rate Debt [Abstract]
Fixed-rate debt	[1]	$ 1,297,467	$ 1,046,273
Fixed-rate debt, Percentage	[1]	98.00%	74.00%
Variable-rate debt		$ 28,400	$ 371,300
Variable-rate debt, Percentage		2.00%	26.00%
Total		$ 1,325,867	$ 1,417,573
Weighted-average interest rate of debt		3.59%	3.74%

[1] Fixed-rate debt includes the portion of variable-rate debt where the interest payments have been effectively fixed by interest rate swaps as of the respective balance sheet date. Due to interest rate swaps expiring in May 2020, partially offset by other interest rate swaps becoming effective during the first half of 2020, $172.5 million of fixed-rate debt as of December 31, 2019 will become variable-rate debt in May 2020. See Note 5 for more information on the interest rate swap agreements.